You would have to be brain-dead not to see the problem.你要是看不出问题,那就太蠢了。By the time I leave work I'm completely brain-dead.到下班时,我的头脑都迟钝了。I'll be brain-dead in the morning if I don't get some sleep.如果不睡会儿觉,到早晨我的脑子就不管用了。Doctors determined that she was brain-dead.医生确定她已经脑死亡。